My life as a Zentanglist has been severely curtailed by my wrist problems. The motion of drawing lines is what seems to hurt most, and all those tangles I've cranked out over the last few years is probably a big contribution to the problem (see what happens when you are an overachiever? Moderation is ALL things).
Nonetheless, once in a while, I just HAVE to tangle. It's in my blood now, lol. I try to keep it small and, alas, not as dense as I love to do.
This was done with Faber-Castell Big Brush, and gellyrolls on Aqua Fabriano Tiziano.